I based it on a Ferdinand Max class Battleship (see here) but left out the main gundeck to give me the room to place a runway down once I'd offset the smokestacks.
I cut a couple of the sponsons from the Ferd Max and added them to rear superstructure to provide some guns. I felt this wasn't enough for a ship of this size so I cut down some spare masts to make the tiny turrets seen on the main deck and the upper rear of the Nef. With the spare rod from these masts I also added the twin guns on the prow as well as the fuel drums on the flight deck.
Finally, I added the main masts and a pair of Lohner-Taube's to complete the look and got it painted!
Great conversion Jack and thanks for sharing the modelling tips with us all!
Hope to see more of your fleets soon :-)